BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	c_name,
	c_custkey,
	o_orderkey,
	o_orderdate,
	o_totalprice,
	sum(l_quantity)
from
	customer,
	orders,
	lineitem
where
	o_orderkey in (
		select
			l_orderkey
		from
			lineitem
		group by
			l_orderkey having
				sum(l_quantity) > 314
	)
	and c_custkey = o_custkey
	and o_orderkey = l_orderkey
group by
	c_name,
	c_custkey,
	o_orderkey,
	o_orderdate,
	o_totalprice
order by
	o_totalprice desc,
	o_orderdate
LIMIT 100;
                                                                                        QUERY PLAN                                                                                         
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=10184991.27..10184994.02 rows=100 width=39) (actual time=107580.455..107580.733 rows=84 loops=1)
   Buffers: shared hit=1392283 read=1036620 dirtied=1 written=1663
   ->  GroupAggregate  (cost=10184991.27..11013087.08 rows=30112575 width=39) (actual time=107580.450..107580.717 rows=84 loops=1)
         Group Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
         Buffers: shared hit=1392283 read=1036620 dirtied=1 written=1663
         ->  Sort  (cost=10184991.27..10260272.71 rows=30112575 width=39) (actual time=107580.423..107580.459 rows=588 loops=1)
               Sort Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
               Sort Method: quicksort  Memory: 70kB
               Buffers: shared hit=1392283 read=1036620 dirtied=1 written=1663
               ->  Hash Join  (cost=2895177.75..5621035.37 rows=30112575 width=39) (actual time=81909.335..107578.979 rows=588 loops=1)
                     Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1392271 read=1036620 dirtied=1 written=1663
                     ->  Seq Scan on lineitem  (cost=0.00..1671917.50 rows=60225150 width=8) (actual time=0.031..14255.045 rows=60045303 loops=1)
                           Buffers: shared hit=579106 read=490560
                     ->  Hash  (cost=2801053.15..2801053.15 rows=7529968 width=39) (actual time=81594.732..81594.732 rows=84 loops=1)
                           Buckets: 8388608  Batches: 1  Memory Usage: 65542kB
                           Buffers: shared hit=813165 read=546060 dirtied=1 written=1663
                           ->  Hash Join  (cost=2185709.11..2801053.15 rows=7529968 width=39) (actual time=71245.763..81590.349 rows=84 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=813165 read=546060 dirtied=1 written=1663
                                 ->  Hash Join  (cost=2116681.11..2619075.62 rows=7529968 width=20) (actual time=69592.844..79929.459 rows=84 loops=1)
                                       Hash Cond: (orders.o_orderkey = lineitem_1.l_orderkey)
                                       Buffers: shared hit=813163 read=510784 dirtied=1 written=1663
                                       ->  Seq Scan on orders  (cost=0.00..404880.36 rows=15059936 width=16) (actual time=0.013..4227.409 rows=15015000 loops=1)
                                             Buffers: shared hit=155948 read=98333 written=1658
                                       ->  Hash  (cost=2065381.88..2065381.88 rows=4103939 width=4) (actual time=65989.076..65989.076 rows=84 loops=1)
                                             Buckets: 4194304  Batches: 1  Memory Usage: 32771kB
                                             Buffers: shared hit=657215 read=412451 dirtied=1 written=5
                                             ->  HashAggregate  (cost=1973043.25..2024342.49 rows=4103939 width=8) (actual time=52400.491..65987.589 rows=84 loops=1)
                                                   Group Key: lineitem_1.l_orderkey
                                                   Filter: (sum(lineitem_1.l_quantity) > 314::double precision)
                                                   Rows Removed by Filter: 15014916
                                                   Buffers: shared hit=657215 read=412451 dirtied=1 written=5
                                                   ->  Seq Scan on lineitem lineitem_1  (cost=0.00..1671917.50 rows=60225150 width=8) (actual time=0.198..15092.383 rows=60045303 loops=1)
                                                         Buffers: shared hit=657215 read=412451 dirtied=1 written=5
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1635.497..1635.497 rows=1500000 loops=1)
                                       Buckets: 2097152  Batches: 1  Memory Usage: 98416kB
                                       Buffers: shared hit=2 read=35276
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.016..1023.232 rows=1500000 loops=1)
                                             Buffers: shared hit=2 read=35276
 Planning time: 7.276 ms
 Execution time: 107871.720 ms
(42 rows)

COMMIT;
COMMIT